John Logan 
The Great Conspiracy: Its Origin and History [EPUB ebook] 

John “Black Jack” Logan was a well known Civil War general who helped the Union win the war in the Western theater, and after the war he became a national politician. In the 1880s, he also wrote this book, in which he asserted that the secession crisis and Civil War were all part of a Southern conspiracy that had its roots long before Lincoln’s election. The book covers all the way into Reconstruction.